If the pain is bad, could you go into the E.R.?
I will surely be praying that it is nothing. Have you ever had an ovarian cyst before? It sounds like some of those I used to get. Larger ones could be palpated. All of those burst and resorbed without medical care except in one instance - but all were accompanied by pain! Eventually, I had to have a hysterectomy, though. No fun but it stopped all that cyst stuff. They can get really huge - and can get septic upon bursting. You'll feel bad & ill if that happens and have to go in for treatment - ER if after hours. I'm praying for you that whatever it is it is something that will either go away now on its own or will turn out to be nothing serious or bad. Hang in there but if you need, go to the E.R.